Polyamide moulding compositions process for production thereof and use of polyamide moulding composition

Abstract

A polyamide moulding composition and uses thereof, and mouldings produced therefrom, comprising the following components: (A) semicrystalline semiaromatic polyamide with melting point above 270° C., or a mixture of these polyamides; (B) copolymer of oxyranyl acrylate and / or oxyranyl methacrylate with at least one other olefinically unsaturated monomer, or a mixture of these copolymers; (C) one or more fibrous reinforcing materials; (D) one or more heat stabilizers; where the proportion of (B) is in the range of 1 to 15% by weight, based on 100% by weight composed of the entirety of the components (A) and (B), with the proviso that the polyamide moulding composition is free from grafted impact modifiers.

Description

technical field

[0001] The present invention relates to polyamide molding compositions, a process for their production and the use of these polyamide molding compositions. Background technique

[0002] Semi-crystalline semi-aromatic polyamides or copolyamides have been developed for high-temperature applications and are, in particular, characterized by particularly good thermomechanical properties when the content of semi-aliphatic terephthalamide units is at least 50 mol % performance. The melting point of polyamides of this type is generally in the range of 270°C to 340°C. Molding compositions based on these polyamides sometimes exhibit composition-dependent deficiencies, in particular in toughness (ie tensile strain at break), energy at break, impact resistance and notched impact resistance. Furthermore, especially in the case of fiber-reinforced molding compositions, the mechanical properties measured perpendicular to the machine direction are rather poor and significa...